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है”ह”ह

IS 3887 (1978): General requirements for cutting typedental instruments [MHD 8: Dentistry]

Indian Standard GENERAL REQUIREMENTS FOR

ISt3887-1978

CUTTING TYPE DENTAL INSTRUMENTS

( First Revision )

Dental Instruments Sectional Committee, CPDC 21

CAairman

MAJ GEN M. D. MEHRA

Members

Representing

Miniatry of Defence ( DGAFMS )

SHRI H. AQ~ARWA~~ Messrs H. Aggarwal and Bros, Jullundur DR K. BHARCZAVA Government Dental and

Ahmadabad College Hospital,

DR A. P. CHITRE DR RATAN H. DOCTOR

Nair Hospital and Dental College, Bombay Indian Dental Traders, Bombay

SHRI N. P. DAVER ( Alternate ) SHR~ K. K. GHAI Ministry of Defence ( DGI )

SHRI NARENDRA SINGH (Alternate ) DR S. S. KHBRA Department of Urban Development, Public Health

and Housing, Government of Maharashtra, Bombay

SHRI L. V. KINI Kini Surgical Mangalore

and Dental Instruments Co,

DR KEKI M. MI~TRY Indian Dental Association, Madras SHRI J. PRABHAKAR Indian Drugs & Pharmaceuticals Ltd, New Delhi

SHRIB. DHANASBKARAN (Alternate) SHRI K. N. RAMASWAMY Direc&a;e General of Technical Development, New

SHRI V. K. SABHARWAL Ministry of Defence ( R i?z D ) DRBALRAJSUR SHRI R. N. VIO

Ministry of Health and Family Welfare

SHRl D. N. Vto ( Alternate ) Ultradent Private Ltd, Bombay

!3a~rS0mP~~r*s~a, Director (Consr Prods & Med

Director General, IS1 (Ex-&ie &fumbw)

Inatrs )

SKCT#tlZr)

SHRI C. N. N. IYEN~AR Amiatant Director ( Consr Prods & Med Instrs ), IS1

( Centinurd on page 2 )

@ copyriiiht 1979

INDIAN STANDARDS INSTITUTION

This publication ir rote&d reproduction in

under the fndian Co/yright Act (XIV of 1957) and who e or in part by any means except with written permission of the P

publisher ahall be deemed to be an infringement of copyright under the said Act.

.IS t 388j - 19;;8

( Continuedfrom pugs 1 )

Dental Cutting and Filling

Convener

DR K. RAMACHANDRAN

Members

SHRI H. AGOARWAL SHRI J. GOBINDRAN

SHRI VIJAYA KUMAR ( Alfsrnotc ) DR M. K. MANI SHRIJ. PRABHAKAR

Instruments Subcommittee, CPDC 21 : 1

Rcpreqxting ,*

Madras Medical College, Madras

Messrs H. Aggarwal and Pros, Jullundur Mcssrs Machino India, Madras

Dental College, Trivandrum Indian Drugs & Pharmaceuticals Ltd, New Delhi

SWRI B. DHANASEKARAN ( Atternatu ) PRESIDENT Dental Council of India, New Delhi DR B. SESHADRI Department of Health and Family Planning,

Government of Andhra Pradesh, Hyderabad DR V. SUBRAMANIAN Urban Development and Public Health Department,

Government of Mabarashtra, Bombay DR T. M. UDANI ( Alternate )

2

Indian Standard GENERAL REQUIREMENTS FOR

CUTTING TYPE DENTAL INSTRUMENTS

( First Revision )

0. FOREWORD

0.1 This Indian Standard ( First Revision 1 was adopted by the Indian Standards Institution on 25 September 1978, after the draft finalized by the Dental Instruments Sectional Committee had been approved by the Consumer Products and Medical Instruments Division Council.

0.2 This Standard is one of a series of Indian Standards on dental hand instruments and has been formulated at the instance of the Advisory Committee for Development of Medical Instruments, Equipment and Appliances of Government of India.

0.3 ‘This standard was first published in 1966. The Sectional Committee responsible for the preparation of this standard decided to revise it in view of the availability of better techniques of production and the indigenous material. The design aspect has been left out SO as to enable the manu- facturer to use his creativity.

0.4 For the purpose of decidin g whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing the result of ,a test or analysis, shall be rounded off in accordance with IS : 2-1960+. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard.

1. SCOPE

1.1 This standard specifies the requirements common to cutting type instruments ( chisels, excavators, hatchets, probes, hoes and scalers ), used in dentistry.

2. TYPES AND GRADES

2.1 The types and grades of the instruments shall be as given in individual specifications.

*Rules for rounding off numerical values ( r&.mf).

3

fs : MB-? - 1938

3. REQUIREMENTS

3.1 The instruments shall be made in one piece unless otherwise specified.

3.2 The instruments consist of a handle, a shank, and an operating or cutting end. The instruments shall be either single ended or double ended.

3.3 Handle - The handle of the instruments shall be octagonal in shape and shall have cuts on all sides for the full length, except space on one side for marking unless otherwise specified.

4. MATERIAL

4.1 The instruments shall be made of stainless steel conforming to Designa- tion 3OCr13 of IS : 6603-1972*.

5. DIMENSIONS AND TOLERANCES

5.1 The overall length of the instruments and dimensions of the handle shall be as given below:

Overall Length, Length of Handle, Width Across Max Nominal Flats

mm mm mm

Single ended 160 120 5

Double ended 170 100 5

5.2 A deviation off 2.5 percent shall be allowed in all dimensions.

6. WORKMANSHIP AND FINISH

6.1 The cutting edge of the instruments shall be properly sharpened and shall be free from burrs, feathers, nicks and waviness.

6.2 The shank of the instruments shall be polished bright and passivated.

6.3 The brazing and welding shall be neat and sound.

6.4 The instruments shall be finished bright except the handle which shall be matt finished.

6.5 All the edges of the instruments shall be rounded except the cutting edge shall be properly sharpened and free from burrs, feathers, nicks and waviness.

*Specification for stainless steel bars and flats.

4

IS : 3887 - 1978

7. HEAT TREATMENT

7.1 The instruments shall be uniformly hardened and tempered to give a hardness of 370 to 430 HV (see IS : 1501-1968* ).

8. TESTS

8.1 Corrosion Resistance -The instruments shall show no sign of corrosion when tested in accordance with IS : 7531-1975t.

8.2 Proof load test, performance test and other tests, if any, shall be given in individual specifications.

9. MARKING

9.1 Each instrument shall be permanently and legibly marked with the manufacturer’s name, initials or registered trade-mark and the country of manufacture.

9.1.1 The instruments may also be marked with the IS1 Certification Mark.

NOTE- The use of the IS1 Certification Mark is governed by the provisions of the Indian Standards Institution ( Certification Marks ) Act and the Rules and Regulations made thereunder. The IS1 Mark on products covered by an Indian Standard conveys the assurance that they have been produced to comply with the requirements of that standard under a well-defined system of inspection, testing and quality control which is devised and supervised by IS1 and operated by the producer. IS1 marked products are also continuously checked by IS1 for conformity to that standard as a further safeguard. Details of conditions under which a licence for the use of the IS1 Certification Mark may be granted to manufacturers or processors, may be obtained from the Indian Standards Institution.

10. PACKING

10.1 The cutting edge of the instruments shall be suitably preserved by hot dipping in plastipeel or any PVC airdrying type dip-coating. Each instrument shall be put either in a polythylene bag or wrapped in wax paper and then be packed in cartons in accordance with the current trade practice. The cartons shall bear the name of the instrument, manu- facturer’s name, initials or registered trade-mark and the country of manufacture.

10.2 The instruments may also be packed as agreed to between the purchaser and the supplier.

*Method for vickers test for steel (firrl revision ). TM&hod for boiling and autoclaving test for corrosion resistance of stainless steel

surgical instruments.

5

INTERNATIONAL SYSTEM OF UNITS ( SI UNITS)

Base Units

Qu- Length Maru Time Electric current Thermodynamic

temperature Luminous intmsity Amount of substance

Supplementary Units

QUANTITY

Plane angle Solid angle

Derived Units

QUANTW Force Energy Power FlllX Flus density Frequency Electric conductance Pre=ure, rtrua

UNR

metre kilogram

ampere kelvin

candela mole

UNIT

radian auradian

UNIT

newton joule watt WCbu

twla hertz

SYMBOL

m

kg I

A K

cd moi

SYMBOL

rad sr

SYmBOL

J” W Wb T HZ S Pa

thNVERBtON

1 N = 0.101972 kgf 1 J = 1 N.m 1 w = 1 J/s 1 Wb = 1 V.s 1 T = 1 Wb/m’ 1 Hz = 1 c/a (s-1 ) 1 S = 1 A/V 1 Pa = 1 N/m’